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Recent content by TEOMECH

  1. TEOMECH

    PROPELLER FOR SUEZMAX

    Hello.... Is there anyone who can help me out this... Recently I found that two almost sister vessels, one ice class 1A and the other one common, with the same propellers.. All i know is that CLASSIFFICATION SOCIETY for ICE CLASS 1A REQUIRES blade thikness bigger and different fitting... So how...
  2. TEOMECH

    Marine Boilers and Water Washing

    Just there was an old engineering tip to water wash the M/E sytem oil (crosshead engines) while the latter contaminated by cylinder oil. Water washing use to be performed while water droplets mixed in a small amounts with system oil after the purifier. Of course as far as i know this is...
  3. TEOMECH

    Marine Boilers and Water Washing

    Hi...... As much as i know the class (Lloyds,ABS,DNV,GL,BV,etc)approves the safety valves opening pressure. And this pressure it is normally equivalent to the design pressure + a margin of 0,03%. So the design pressure of each boiler is always stamped at the name plate and also mentioned at its...
  4. TEOMECH

    how full is the expansion tank?

    Hi.. I am wondering that there is a method to calculate by a pressure gauge in the suction of the pump.(usually is fitted) Considering that a precise gauge can give u the level. 1 ATM = 10330 mmH2O So if u can find the specific gravity of the fluid i think you can achieve your scope....
  5. TEOMECH

    About pneumatic control valves

    Thank you all for your valuable posts,but i ve been realized that maybe there is a problem with control air pressure.Overpressure even 0,5 bar it can damage the diaphragm.So i am searching to that direction. For you information the valve is under guarrantee period and there is a claim to...
  6. TEOMECH

    Rudder trunk antistowage grating

    Hello I am being proposed to fit antistowage/anti drug trafficing grating to the rudder trunk of some vessels. So i have some questions concerning.. 1. The minimum size of the openings 2. The type grating (metal bars or checker plate) Do you have any idea about that? any proposal? Also...
  7. TEOMECH

    Rudder trunk antistowage grating

    Hello I am being proposed to fit antistowage/anti drug trafficing grating to the rudder trunk of some vessels. So i have some questions concerning.. 1. The minimum size of the openings 2. The type grating (metal bars or checker plate) Do you have any idea about that? any proposal? Also...
  8. TEOMECH

    SHAFT ALIGNMENT TOLERANCES

    Before shaft alignment a sight boring & accurrate measurments taking place.That is the most important.Then a temporary jig support the propeller shaft and jack down the intermediate shaft in a specified force, to check how match the shaft deviates from its alignment by dial gauges and...
  9. TEOMECH

    About pneumatic control valves

    Can anybody give me any advanced cause about the continuous damage of diaphragms(reinforced) of pneumatic control valve used for boiler feed water? (reverse acting,air quality good)
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